MAX329:Ultra-Low-Leakage, Single-Ended, Monolithic, CMOS Analog Multiplexer

The MAX328/MA329 are monolithic CMOS analog multiplexers. The MAX328 is a single-ended, 1-of-8 device, and the MAX329 is a differential, 2-of-8 device. Designed to provide the lowest possible on- and off-leakages, these multiplexers switch signals from high source impedance, providing the mux operates into a high-input-impedance op amp or A/D converter. The MAX328/MAX329 are pin-for-pin replacements for the popular DG508/DG509 in these applications. Adding an external 40kΩ resistor to each input makes the MAX328/MAX329 an excellent fault-tolerant multiplexer. Low leakage (less than 1pA at +25°C) and 2.5kΩ on-resistance allow the circuit to sustain 110V AC faults indefinitely while maintaining an error of less than 40nV for normal signals (i.e., 1pA times 40kΩ). The MAX328/MAX329 work equally well with a single supply of 10V to 30V or dual supplies of ±5V to ±18V. They also perform well with unbalanced combinations of supply voltage, such as +12V and -5V or +5V and -15V. Low power dissipation (1.9mW with ±15V supplies) allows use in portable applications.

Key Features
  • Ultra-Low Off- and On-Leakage: 1pA Typ
  • Bidirectional Operation (Use as Mux or Demux)
  • TTL and CMOS Logic Compatibility
  • Analog-Signal Range Includes Power-Supply Rails
  • Switching Speeds Less Than 1.5µs
  • Pin Compatible with DG508/DG509 and MAX358/MAX359
  • Latchup Proof Construction
MAX328, MAX329: Typical Operating Circuit
MAX328, MAX329: Typical Operating Circuit
DataSheet
titleDownload file
MAX328-MAX329 Data SheetMAX328-MAX329.pdf
Parametrics
Part NumberFunctionsConfig.ChannelsVSUPPLY (Single)
(V)
VSUPPLY (Single)
(V)
VSUPPLY (Dual)
(±V)
VSUPPLY (Dual)
(±V)
RON
(Ω)
IL(OFF)
(nA)
tON
(ns)
tOFF
(ns)
QINJECTION
(pC)
CON
(pF)
COFF
(pF)
Package/PinsBudgetary
Price
minmaxminmaxmaxmaxminmaxSee Notes
MAX328Mux8-to-1110304.51835000.01150010005101.8CDIP(N)/16
PDIP(N)/16
SOIC(W)/16
TQFN/16
$4.03 @1k
MAX3294-to-126CDIP(N)/16
PDIP(N)/16
SOIC(W)/16
TQFN/16
$8.18 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX329C/DActiveDICE SALES,;NA pin;DICE S;0°C to +70°CSee data sheet
MAX329CJENo Longer AvailableCDIP(N),;16 pin;173.5 mm²0°C to +70°CNo
MAX329CPENo Longer AvailableMAX329CPE+PDIP(N),;16 pin;158.4 mm²0°C to +70°CNo
MAX329CPE+ActivePDIP(N),;16 pin;158.4 mm²0°C to +70°CLead Free
MAX329CWENo Longer AvailableMAX329CWE+SOIC(W),;16 pin;111.8 mm²0°C to +70°CNo
MAX329CWE+ActiveSOIC(W),;16 pin;111.8 mm²0°C to +70°CLead Free
MAX329CWE+TActiveSOIC(W),;16 pin;111.8 mm²0°C to +70°CLead Free
MAX329CWE-TNo Longer AvailableMAX329CWE+TW.SO;16 pin0°C to +70°CSee data sheet
MAX329EJENo Longer AvailableCDIP(N),;16 pin;173.5 mm²-40°C to +85°CNo
MAX329EPENo Longer AvailableMAX329EPE+PDIP(N),;16 pin;158.4 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX329EPE+ActivePDIP(N),;16 pin;158.4 mm²-40°C to +85°CLead Free
MAX329ETE+No Longer AvailableTQFN,;16 pin;26 mm²-40°C to +85°CLead Free
MAX329EWENo Longer AvailableMAX329EWE+SOIC(W),;16 pin;111.8 mm²-40°C to +85°CNo
MAX329EWE+ActiveSOIC(W),;16 pin;111.8 mm²-40°C to +85°CLead Free
MAX329EWE+TActiveSOIC(W),;16 pin;111.8 mm²-40°C to +85°CLead Free
MAX329EWE-TNo Longer AvailableMAX329EWE+TW.SO;16 pin-40°C to +85°CSee data sheet
MAX329MJENo Longer AvailableCDIP(N),;16 pin;173.5 mm²-55°C to +125°CNo
MAX328-MAX329.pdf MAX329
MAX329.pdf MAX329
MAX328-MAX329.pdf MAX329